diff --git a/src/org/jetbrains/jet/j2k/Converter.java b/src/org/jetbrains/jet/j2k/Converter.java
index 0f44eef8c30..a448b78d4a1 100644
--- a/src/org/jetbrains/jet/j2k/Converter.java
+++ b/src/org/jetbrains/jet/j2k/Converter.java
@@ -591,11 +591,12 @@ public class Converter {
     if (expression != null) {
       PsiType actualType = expression.getType();
       if (actualType != null) {
+        if (Node.PRIMITIVE_TYPES.contains(actualType.getCanonicalText()) && (expression instanceof PsiReferenceExpression
+          && ((PsiReferenceExpression) expression).isQualified() || expression instanceof PsiMethodCallExpression)
+          && expressionToExpression(expression).toKotlin().contains("?."))
+          conversion += ".sure()";
         if (isConversionNeeded(actualType, expectedType))
           conversion += getPrimitiveTypeConversion(expectedType.getCanonicalText());
-        if (Node.PRIMITIVE_TYPES.contains(actualType.getCanonicalText()) && (expression instanceof PsiReferenceExpression && ((PsiReferenceExpression) expression).isQualified() ||
-          expression instanceof PsiMethodCallExpression))
-          conversion += ".sure()";
       }
     }
     return conversion;
diff --git a/src/org/jetbrains/jet/j2k/visitors/StatementVisitor.java b/src/org/jetbrains/jet/j2k/visitors/StatementVisitor.java
index 53f34e4004a..d5bba48f06d 100644
--- a/src/org/jetbrains/jet/j2k/visitors/StatementVisitor.java
+++ b/src/org/jetbrains/jet/j2k/visitors/StatementVisitor.java
@@ -347,15 +347,12 @@ public class StatementVisitor extends ElementVisitor {
   public void visitReturnStatement(@NotNull PsiReturnStatement statement) {
     super.visitReturnStatement(statement);
     PsiExpression returnValue = statement.getReturnValue();
-    String conversion = "";
-
     PsiType methodReturnType = Converter.getMethodReturnType();
-    if (returnValue != null && methodReturnType != null && isConversionNeeded(returnValue.getType(), methodReturnType)) {
-      conversion = getPrimitiveTypeConversion(methodReturnType.getCanonicalText());
-    }
+    Expression expression = returnValue != null && methodReturnType != null ?
+      createSureCallOnlyForChain(returnValue, methodReturnType) :
+      expressionToExpression(returnValue);
     myResult = new ReturnStatement(
-      expressionToExpression(returnValue),
-      conversion
+      expression
     );
   }
 }
diff --git a/testData/ast/issues/file/kt-794.kt b/testData/ast/issues/file/kt-794.kt
index 2cc75b06dc2..11a2802bf74 100644
--- a/testData/ast/issues/file/kt-794.kt
+++ b/testData/ast/issues/file/kt-794.kt
@@ -1,6 +1,6 @@
 open class Test() {
 open fun getInt() : Int {
 var b : Byte = 10
-return (b).int
+return b.int
 }
 }
\ No newline at end of file
diff --git a/testData/ast/issues/file/kt-820-field.kt b/testData/ast/issues/file/kt-820-field.kt
index 7326083fac8..77fb95f2c19 100644
--- a/testData/ast/issues/file/kt-820-field.kt
+++ b/testData/ast/issues/file/kt-820-field.kt
@@ -8,5 +8,5 @@ var myContainer : Container? = Container()
 }
 }
 open class Test() {
-var b : Byte = One.myContainer?.myInt.byt.sure()
+var b : Byte = One.myContainer?.myInt.sure().byt
 }
\ No newline at end of file
diff --git a/testData/ast/issues/file/kt-820.kt b/testData/ast/issues/file/kt-820.kt
index 6fd43add913..56fb9bc0682 100644
--- a/testData/ast/issues/file/kt-820.kt
+++ b/testData/ast/issues/file/kt-820.kt
@@ -9,6 +9,6 @@ var myContainer : Container? = Container()
 }
 open class Test() {
 open fun test() : Unit {
-var b : Byte = One.myContainer?.myInt.byt.sure()
+var b : Byte = One.myContainer?.myInt.sure().byt
 }
 }
\ No newline at end of file
diff --git a/testData/ast/issues/file/kt-837.jav b/testData/ast/issues/file/kt-837.jav
new file mode 100644
index 00000000000..c1f41afeccf
--- /dev/null
+++ b/testData/ast/issues/file/kt-837.jav
@@ -0,0 +1,19 @@
+package com.voltvoodoo.saplo4j.model;
+
+import java.io.Serializable;
+
+public class Language implements Serializable {
+        public static Language ENGLISH = new Language("en");
+        public static Language SWEDISH = new Language("sv");
+
+        protected String code;
+        private static final long serialVersionUID = -2442762969929206780L;
+
+        public Language(String code) {
+                this.code = code;
+        }
+
+        public boolean equals(Language other) {
+                return other.toString().equals(this.toString());
+        }
+}
\ No newline at end of file
diff --git a/testData/ast/issues/file/kt-837.kt b/testData/ast/issues/file/kt-837.kt
new file mode 100644
index 00000000000..17e9e95c040
--- /dev/null
+++ b/testData/ast/issues/file/kt-837.kt
@@ -0,0 +1,16 @@
+namespace com.voltvoodoo.saplo4j.model
+import java.io.Serializable
+public open class Language(code : String?) : Serializable {
+{
+this.$code = code
+}
+protected var code : String? = null
+open public fun equals(other : Language?) : Boolean {
+return other?.toString()?.equals(this.toString()).sure()
+}
+class object {
+public var ENGLISH : Language? = Language("en")
+public var SWEDISH : Language? = Language("sv")
+private val serialVersionUID : Long = (-2442762969929206780)
+}
+}
\ No newline at end of file